Line 6 M13 - Manual (Page 25)

Looper Details
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The Looper in the M13 is similar to the looper in the DL4 Stompbox Modeler. It gives
you up to 30 seconds of mono recording time at normal speed, or 60 seconds at half speed.
Keep in mind your loop will play back in mono, even if you’re running stereo FX.
Looper & Live Guitar
When you record and play back a loop, your current Scene will still be active. In fact,
while your loop is playing you can select a new Scene at any time by stepping on the
Scenes switch, then selecting a Scene as usual.
Since the M13 responds to MIDI messages, you can optionally set up a MIDI control
device to control the looper, leaving all 12 of your FX Unit switches dedicated to your
M13 effects. This way, you could switch your M13’s four sets of A, B and C effects on or
off at any time and still control Play, Record, Overdub, Half Speed and Reverse functions.
Below is a Reference Table of MIDI CC values for controlling M13 Looper functions via
MIDI. For a more comprehensive list of M13 MIDI messages, see Appendix A.
MIDI CC Reference Table : Looper Control
M13 Footswitch MIDI CC# Looper Function
Record/Overdub 50 0 to 63 = Overdub 64 to 127 = Record
Play/Stop 28 0 to 63 = Stop 64 to 127 = Play
Half Speed 36 Toggles between Half Speed & Normal Speed
Reverse 85 Toggles Reverse On or Off
Undo/Redo 82 Activates Undo/Redo
Play Once 80 Activates Play Once function
Pre/Post 84 0 to 63 = Pre 64 to 127 = Post
Looper Control 86 0 to 63 = Exit 64 to 127 = Enter
Expression Pedal Control
You can optionally control Looper EQ, Playback and Overdub Levels with an expression
pedal by setting up your heel and toe values and assignments in Setup Mode, as described
in Chapter 2, Page 2. Also see Chapter 3 for more expression pedal info.